请检查下面英文的各种错误,主要是语法、时态方面.

请检查下面英文的各种错误,主要是语法、时态方面.
Rate of litter decomposition has been considered as one of the most important factors in regulating ecosystem productivity and carbon balance.Currently,k value is always estimated by one time of litter bags incubation.Mass remaining in the litter bags is measured at different intervals.It is still unclear whether k values vary depending on incubation time.Our objective is conducting an experiment to improve our understanding of k values with different incubation time in tropical and subtropical forests.
Methods In this study,litter bags were placed in the fields at 8 different incubation times during a year.Litter mass remaining was measured four times over 12 months,and k values were estimated.Accordingly,environmental factors were measured during the period of experiment.
Important findings With different incubation time,litter mass remaining and k values are significantly (p＜0.05)different.Rate of litter decomposition is significantly(p＜0.05) related to environmental factors of the prophase rather than the later during the time interval of the experiment.K values extend from 0.779 to 1.303,and are significantly(p＜0.001) higher when incubation time started in wet seasons than in dry seasons.Our results indicate that the incubation time of litter bags could significantly influence the estimation of k values,which may influence the estimation of ecosystem productivity and carbon balance.

Rate of litter decomposition has been considered as one of the most important factors in regulating ecosystem productivity and carbon balance.Currently,k value is always estimated by one time of litter bags incubation.Mass remaining in the litter bags is measured at different intervals.It is still unclear whether k values vary (,) depending on incubation time.Our objective is conducting (to conduct,不定式的未来“意味”更重些） an experiment to improve our understanding of k values with (during,或者at,会不会更合适些) different incubation time in tropical and subtropical forests.
Methods In this study,litter bags were placed in the fields at 8 different incubation times during a year.Litter mass remaining was measured four times over 12 months,and k values were estimated.Accordingly,environmental factors were measured during the period of experiment (during the experiment即可）.
Important findings With different incubation time,(the) litter mass remaining and (the) k values are significantly (p＜0.05)different.Rate of litter decomposition is significantly(p＜0.05) related (correlated?) to environmental factors of the prophase rather than the later during the time interval of the experiment (during the experiment interval).K values extend from 0.779 to 1.303,and are significantly(p＜0.001) higher when incubation time (the incubation) started in wet seasons than (that started) in dry seasons.Our results indicate that the (the可去掉) incubation time of litter bags could (can) significantly influence the (the可去掉) estimation of k values,which may (in turn) influence the (the可去掉) estimation of ecosystem productivity and carbon balance.